| ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS |
| 1.Rated Frequency |
50/60Hz |
| 2.Rated Maximum Line to Line Voltage |
12kV,r.m.s |
| 3.Rated Power Frequency Withstand Voltage:Air |
38kV,r.m.s |
| 4.Rated Impulse Withstand Voltage:Air |
95kV,Peak |
| 5.Rated Normal Current |
1250A |
| 6.Rated Short-Circuit Current(3Phase Symmetrical Basis) |
25kA,r.m.s |
| 7.Percentage D.C. Component of Rated S.C. Breaking Current |
50% |
| 8.Rated Short-Circuit Making Current |
63kA,Peak |
| 9.Rated Duration of Short Time Current |
3s |
| 10.Rated Short Time Withstand Current |
25kA,r.m.s |
| 11.Rated Peak Withstand Current |
63kA,r.m.s |
| 12.Maximum Contact Resistance at Minimum Closing Force |
25Micro ohms |
| 13.Capacitor Switching Capacity(Single Bank) |
400A,r.m.s |
| MECHANICAL DATA |
| 1.Interrupter Weight(Approx.) |
2.65kg |
| 2.Moving Part Weight(Approx.) |
1.2kg |
| 3.Contact Force from Atmospheric Pressure |
15.9kgF |
| MECHANICAL REQUIREMENTS(REF. VCB) |
| 1.Contact Stroke |
8±1 mm |
| 2.Opening Speed(average of 75 contact gap) |
1.0-1.4m/Sec |
| 3.Maximum Overtravel During Opening |
2mm |
| 4.Maximun Rebound During Opening |
2mm |
| 5.Closing Speed(average of last 30% contact gap) |
0.6-1.0m/Sec |
| 6.Maximum Contact Bounse Duration(with maximum 2 bounces) |
0.002Sec |
| 7.Rated Contact Compressive Force |
184-224kgF |
